Longshen black tea reduces plaque formation as well as restricts bacteria growth that promotes the formation of cavities and tooth decays. Longshen black tea contains polyphenols, which are also antioxidants that help block DNA damage associated with tobacco or other toxic chemicals.

Gansu Dragon Tea Co., Ltd is located in the upper reach of Yangtze River. It is also situated in Yangba Town of Kangxian County which is known as the Natural Oxygen Bar of Longnan City. In 2015, the town won the honor of Industrial Prosperity and International Famous Tea's Hometown for the ten most beautiful villages in China. The base of raw material of our company is around 33 ° N and 105 ° E. It is about 800 to 1200 meters above sea level. It has a wet climate and abundant rainfall. Covered in the clouds, the town has a forest coverage rate of over 85 percent and also boasts the AAAA scenic spot. Hence, it is a typical high-altitude and high-evaluation inland area for producing natural organic tea.